The Linux mini computer is distributed by Element 14 and RS Components. The former already makes 100 percent of its Raspberry Pi devices in Wales while the latter is in the process of moving the "bulk" of its manufacturing from the Far East and into Wales.

The factory in Pencoed, just outside Cardiff, now makes 40,000 Raspberry devices every week and that number is set to rise, according to a blog post by Liz Upton, head of communications for the Raspberry Pi Foundation. "I have some projections I’m not allowed to share, but they did make me swallow sharply when I read them," she said, on Thursday.

"We sold our millionth Pi in January. Soon there will be more Made in the UK Pis in the world than their Made in China cousins," she added.

Despite tens of thousands of the devices coming off the production line each week, the charity is still struggling to meet global demand, according to the blog post.

Gerald Kelly, the GM of Sony's Pencoed plant, said: "In June we scheduled 204 units per week. By July that had climbed to 10,000 units per week – this month we will achieve 38,000 output per week, and this is just the beginning.

"The future is about higher volumes, a second generation Pi and accessories such as a camera board. Current total forecast for Pi products indicate that 1,000,000 output will be achieved sometime in July this year."